package com.ly.framework.config;

import com.ly.framework.security.filter.JwtAuthenticationTokenFilter;
import com.ly.framework.security.handle.AuthenticationEntryPointImpl;
import com.ly.framework.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

import javax.annotation.Resource;

/**
 * spring security配置
 * @author ruoyi
 */
@EnableGlobalMethodSecurity (prePostEnabled = true, securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    /**
     * 自定义用户认证逻辑
     */
    @Resource
    private UserDetailsService userDetailsService;

    /**
     * 认证失败处理类
     */
    @Resource
    private AuthenticationEntryPointImpl unauthorizedHandler;

    /**
     * 退出处理类
     */
    @Resource
    private LogoutSuccessHandlerImpl logoutSuccessHandler;

    /**
     * token认证过滤器
     */
    @Resource
    private JwtAuthenticationTokenFilter authenticationTokenFilter;

    /**
     * 跨域过滤器
     */
    @Resource
    private CorsFilter corsFilter;

    /**
     * 解决 无法直接注入 AuthenticationManager
     * @return
     * @throws Exception
     */
    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean () throws Exception {
        return super.authenticationManagerBean ();
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Override
    protected void configure (HttpSecurity httpSecurity) throws Exception {
        httpSecurity
                // CSRF禁用，因为不使用session
                .csrf ().disable ()
                // 认证失败处理类
                .exceptionHandling ().authenticationEntryPoint ( unauthorizedHandler ).and ()
                // 基于token，所以不需要session
                .sessionManagement ().sessionCreationPolicy ( SessionCreationPolicy.STATELESS ).and ()
                // 过滤请求
                .authorizeRequests ()
                // 对于登录login 验证码captchaImage 允许匿名访问
//                .antMatchers ( "/login", "/captchaImage","/heart/**", "/getRouters","/dept/option").anonymous ()
                .antMatchers ( "/login", "/captchaImage","/dept/option").anonymous ()
                .antMatchers (
                        HttpMethod.GET,
                        "/*.html",
                        "/**/*.html",
                        "/**/*.css",
                        "/**/*.js"
                ).permitAll ()
                .antMatchers ( "/processDefinition/**" ).permitAll ()
                .antMatchers ( "/activitiHistory/**" ).permitAll ()
                .antMatchers ( "/profile/**" ).permitAll ()
                .antMatchers ( "/common/download**" ).anonymous ()
                .antMatchers ( "/common/download/resource**" ).anonymous ()
                .antMatchers ( "/swagger-ui.html" ).anonymous ()
                .antMatchers ( "/swagger-resources/**" ).anonymous ()
                .antMatchers ( "/webjars/**" ).anonymous ()
                .antMatchers ( "/*/api-docs" ).anonymous ()
                .antMatchers ( "/druid/**" ).anonymous ()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest ().authenticated ()
                .and ()
                .headers ().frameOptions ().disable ();
        httpSecurity.logout ().logoutUrl ( "/logout" ).logoutSuccessHandler ( logoutSuccessHandler );
        // 添加JWT filter
        httpSecurity.addFilterBefore ( authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class );
        // 添加CORS filter
        httpSecurity.addFilterBefore ( corsFilter, JwtAuthenticationTokenFilter.class );
        httpSecurity.addFilterBefore ( corsFilter, LogoutFilter.class );
    }


//    @Override
//    protected void configure (HttpSecurity httpSecurity) throws Exception {
//        System.out.println ("-------------------------------------");
//        httpSecurity
//                // CSRF禁用，因为不使用session
//                .csrf ().disable ()
//                // 认证失败处理类
//                .exceptionHandling ().authenticationEntryPoint ( unauthorizedHandler ).and ()
//                // 基于token，所以不需要session
//                .sessionManagement ().sessionCreationPolicy ( SessionCreationPolicy.STATELESS ).and ()
//                // 过滤请求
//                .authorizeRequests ()
//                // 允许所有请求匿名访问
//                .anyRequest ().anonymous ().and ()
//                .headers ().frameOptions ().disable ();
//        httpSecurity.logout ().logoutUrl ( "/logout" ).logoutSuccessHandler ( logoutSuccessHandler );
//        // 添加JWT filter
//        httpSecurity.addFilterBefore ( authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class );
//        // 添加CORS filter
//        httpSecurity.addFilterBefore ( corsFilter, JwtAuthenticationTokenFilter.class );
//        httpSecurity.addFilterBefore ( corsFilter, LogoutFilter.class );
//    }


    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder () {
        return new BCryptPasswordEncoder ();
    }

    /**
     * 身份认证接口
     */
    @Override
    protected void configure (AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService ( userDetailsService ).passwordEncoder ( bCryptPasswordEncoder () );
    }
}
